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  • water, light and carbon dioxide
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12y ago

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What two things do seeds need to germinate in soil?

a seed needs sunlight and lots of water to grow


Is soil necssery for seed germination?

Soil is not always necessary for seed germination, as some seeds can germinate in alternative growing mediums like peat moss, vermiculite, or perlite. However, soil provides seeds with the essential nutrients, moisture, and support needed for successful germination and seedling growth.


Why is it necessary to sow seeds at appropriate depth?

1. If you plant a seed too deep, it will not get enough sunlight to germinate. If you plant a seed to shallow, it won't have enough soil cover to support the germinating top growth. The rule of thumb on planting seed is plant three times the depth of the size of the seed. If you have seeds that are very tiny, just the barest covering of soil is enough. For larger seeds, the depth varies with the size of the seed. 2. It is necessary to sow seeds at an appropriate depth because it ensures the proper and timely germination of the seed. The seed sown at more depth will not be able to germinate on time and the leafs will not appear on the surface on time. This is because it has to cross the layer of soil to come or appear on the surface. Similarly the seeds are not sown superficially on the ground because they can be eaten by the birds or can be easily carried away by wind.


How long can a seed remain inactive in the soil?

depends on the specie, some seeds have to germinate within a few weeks or months or they will die; others can remain dormant for up to 20 years before conditions can be right and they will germinate. there was a instance a while back where a 2000 year old date seed that was found in an archaeological site was successfully germinated


Why do we loosen the soil in planting the seeds?

It makes it easier for the germinated seed to spread its roots out and establish itself.